Results 291 to 300 of about 8,626,611 (344)

Seedling Quality of Southern Pines

1991
Seedling quality is related to a seedling’s ability to survive prolonged environmental stresses and produce vigorous growth following outplanting. This complex concept includes both a seedling’s “physiological readiness” to grow and suitable morphological features that will allow the seedling to overcome site limitations. Seedling ontogeny (genetically
Jon D. Johnson, Michael L. Cline
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Quality classification standard of Scrophularia ningpoensis seedlings

China Journal of Chinese Materia Medica, 2015
The morphological indexes of the Scuophularia ningpoensis seedlings including the longth, diameter and weight were measured, clustering analysis was used to set up the standard quality grading of seedlings of S. Ningpoensis by SPSS. Field experiment was carried out to measure the indicators of plants growth and development, the yield and the quality ...
Xue, Zhang, Da-xia, Chen, Jun, Tan, Long-yun, Li   +3 more
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Effects of Different Seedling Raising Substrates on Quality of Rice Seedlings

2019
Five different seedling raising substrates were used to take the place of the nutrient soil to cultivate rice seedling mechanical transplanting in Anqing, Anhui Province. The emergence rate, survival rate, quality of aboveground parts of seedlings, root system and dry weight and fresh weight were surveyed and analyzed.
WANG, Xiangdong, CHEN, Zaigao, WANG, Xiangdong, CHEN, Zaigao   +3 more
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Seedling quality and short-term field performance of three Amazonian forest species as affected by site conditions

iForest : Biogeosciences and Forestry
High quality seedlings are essential for the successful establishment of forest stands. Seedling quality can be assessed by the morphological attributes ( e.g. , height, diameter, dry mass, Dickson’s quality index) measured in the nursery phase.
Z. Guimarães, DC Da Silva, M. Ferreira
semanticscholar   +1 more source

Machine vision for conifer seedling quality control

New Forests, 1997
A PC-based line-scan machine vision system providing rapid measurement of bare-root seedling morphological features has been developed. Designed for quality control and morphological data acquisition by nursery personnel, the machine provides a user-friendly, menu-driven graphical interface.
Michael P. Rigney, Glenn A. Kranzler
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Oak seedlings grown in different light qualities

Physiologia Plantarum, 1981
Oak seedlings (Quercus robur L.) were germinated in darkness for 3 weeks and then given continuous long wavelength far‐red light (LFR; wavelengths longer than 700 nm). A control group of seedlings was kept in darkness. After 2 additional weeks the chlorophyll formation ability in red light was examined in the different seedlings.
Lennart Axelsson, Birgitta Klockare, Christer Sundqvist   +2 more
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